20026961 has 8 divisors (see below), whose sum is σ = 20772864. Its totient is φ = 19287360.

The previous prime is 20026957. The next prime is 20026967. The reversal of 20026961 is 16962002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20026961 - 2² = 20026957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20026961.

It is not an unprimeable number, because it can be changed into a prime (20026967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5465 + ... + 8361.

It is an arithmetic number, because the mean of its divisors is an integer number (2596608).

Almost surely, 2^20026961 is an apocalyptic number.

It is an amenable number.

20026961 is a deficient number, since it is larger than the sum of its proper divisors (745903).

20026961 is a wasteful number, since it uses less digits than its factorization.

20026961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3151.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 20026961 is about 4475.1492712534. The cubic root of 20026961 is about 271.5636792478.

Adding to 20026961 its reverse (16962002), we get a palindrome (36988963).

The spelling of 20026961 in words is "twenty million, twenty-six thousand, nine hundred sixty-one".